I'm experiencing this as well in a fully patched Ubuntu 12.04 install on a MBP 8-2 early 2011.
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series] [1002:6760]
I'm experiencing this as well in a fully patched Ubuntu 12.04 install on a MBP 8-2 early 2011.
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series] [1002:6760]